remembered now, and it should still be in a box at my mum's attic..

David Bedford - "Nurses Songs With Elephants"

(Dandelion, 1972) collects the title-track, a minimalistic work for ten acoustic guitars, Trona (1967) and Some Bright Stars for Queen's College (1969), a composition for 80 college girls' voices and 27 plastic pipe twirlers.